YASKAWA VS-626M5 Instruction Manual page 192

Troubleshooting
12
Table 12.2 Inverter Faults (continued)
Fault No. Name
Tuneup
incomplete
Orientation command was input be-
(magnetic
fore tuning up (minor fault).
sensor meth-
od orienta-
tion)
Magnetic sen-
Incorrect magnetic sensor signal
sor signal
voltage level during tuning up.
detection er-
ror
Fault of num-
ber of pulses
Number of motor pulses per main
per rotation
axis rotation (4096 ÷ speed gear ra-
(magnetic
tio) exceeded ±6% during tuning
sensor meth-
up.
od orienta-
tion)
Magnetic sen- Magnetic sensor signal cable was
sor signal dis- disconnected or connected improp-
connection erly.
INC signal er-
ror
(Magnetic INC signal input timing error
sensor meth- (minor fault)
od orienta-
tion)
YENET1200
Communication error between YE-
communica-
NET1200 card and NC machine.
tion error
Excessive
Position deviation exceeded the al-
position devi-
lowable range.
ation
YENET1200
YENET1200 card memory (PROM)
card ROM er-
error
ror
YENET1200
WDT error between YENET1200
communica-
card and NC machine.
tion WDT er-
ror 1
YENET1200
WDT error between YENET1200
communica-
card and control PCB.
tion WDT er-
ror 2
YENET1200
YENET1200 card detected NMI.
card NMI
YENET1200
YENET1200 card detected division/
card zero di-
overflow error.
vision
Communica- Answer to communications com-
tions timeout mand between YENET1200 card
1 and control PCB does not return.
Contents Corrective Actions
Perform orientation tuneup.
S Check the wiring of magnetic
sensor signal lines.
S Replace the magnetic sensor or
magnetizer.
S Check control constants C1-27,
28, 29.
S Check the wiring of motor en-
coder signal lines.
S Check the wiring of magnetic
sensor signal lines.
S Replace the magnetic sensor or
magnetizer.
S Perform tuneup again.
After carrying out absolute posi-
tioning, change circuit to com-
mand INC signal.
Check the wiring on communica-
tion line.
Check the main axis load.
Replace YENET1200 card.
Check the wiring on communica-
tion line.
Replace the control PCB.
Replace YENET1200 card.
Replace the controller PCB.
12 - 8
Error Code
Ffff
Ffff
Ffff
Ffff
Ffff
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